Russia's redline for the US

The Russian president had a blunt warning for the US and NATO. He warned that Russian weapons will be aimed at powers that have deployed missile systems that could target Russia.

What does Putins warning for the US and NATO means, given that it comes on the heels of the US withdrawing from the INF nuclear treaty? Are Russias concerns that NATO missile systems in Eastern Europe pose a threat to Russias national security valid or not? University Lecturer, Daniel Kovalik (Pittsburgh, PA) Editor in Chief, opednews.com, Rob Kall (Philadelphia)